>> two months ago, this man may be hardest decision of his life. he sold his car in damascus, that some clothes, and flew to cairo. he took his wife and daughter, but could not afford to take the rest of the family. >> i lost my factory. everything we had in syria, we lost. i am afraid of the regime and what is happening. >> mahomet is 20 years old. he left syria because tv -- muhammed is 20 years old. he left syria because he was afraid. the united nations estimates that more than 100,000 syrian refugees have fled to egypt since march 2011. 13,000 have registered, but the u.n. expects the number to triple by june. tens of thousands of syrian refugees live and work here.